Interlocking shingle



April 14, 1925.

R. A. KNOLL INTERLOCKING SHINGLE Filed JuIy 13, 1923 FIG.5

I ff mvsm'on ATTORNEY WITNESS:

. more particularly to what I term an inter- Patented Ap'r. 14, 1925.

RAYMOND A. KNOLL, 0F CARRICK, PENNSYLVANIA.

' INTERLOCKING- sHm'GLE.

Application filed July 13, 1923. Serial No. 651,322.

To all whom it may concern:

Be it known that I, RAYMOND A. KNOLL, a citizen of'the United States, residing at Garrick, in the county of Allegheny and State of Pennsylvania-hairs invented new and useful Improvements in Interlocking Shingles, of which the following is a specification.

This invention relates to shingles for covering roofs and other structures, and

locking shingle.

One of the main objects of the invention is to provide a shingle of "neat appearance which can be readily produced at small cost and can be quickly and easily applied. A further object is to provide a shingle so constructed that the shingles when applied are in interlocking engagement and are secured at a plurality of points. Another object is to provide a shingle in which the lap is reduced to a minimum thus effecting a saving in material. Further objects will appear from the detail description.

In the drawings Fig. 1 is a plan view of the shingles as aplied' P Fig 2 is a section taken substantially on line 22 of Fig. 1;

Fig. 3 is a plan view of folded. a

Fig. 4 is a plan view of the shingle folded;

Fig. 5 is a side view of the shingle folded.

My invention is intended more particularl for use in connection with flexible compositionshingles of which there are many well known kinds. though it may be equally well applied to shingles of sheet metal and other suitable materials.- In forming the shingle I first cut a blank 1 which, in this particular instance, tapers from each end to points connected by line a-a. The blank the shingle un- 1 is folded downwardly and outwardly along Y lino 7)-Z) extending transversely oflower pol'lion 2 of the blank, and is then folded upwardly along line (a -a so as to position upper portion 3 outwardly of lower portion 2. This provides a shingle having a central double fold 4 extending transversely of the shingle and connecting the upper and lower portions thereof. The double fold t provides inner and outer elements 4* and 4:", respectively, which extend in substantial parallelism with the body of the shingle, these elements being oppositely directed and adapted to receive the corner portions of subjlacent and superjaeent shingles, respective y. I

The shingles are laid so that the shingles of'each course are in staggered relation to the shingles of the next course, as is the common practice in this art. In laying the shingles, after the first or lower course A has been laid, the shingles of the next course B are placed so that the lower corners of each shingle ,fit into the outer portions of the folds of the two laterally adjacent shingles ofcourse A, the upper corners of each of the shingles of course A being positioned within the inner portions of the double folds ofzthe two laterally adjacent shingles of course B. Suitable nails 5 may now be driven through the double folds of the shingles of course A, these nails also passing through 'the lower corners of the shingles of course B. To permit of this being done, the upper portion of each shingle of course A is Withdrawn from the folds of the shingles of course B and turned downwardly along line aa. After the nails have been driven into position, the shingles of course A are again inserted into the folds of the shingles of course B, and the next courseC is laid. The shingles of course C are so positioned that the upper corners of the shingles of course B are within the inner portions of the double folds of the shingles of course C, the lower corners of the shingles of course C being within the outer portions of the folds of the laterally adjacent shingles of course B. The nails 5 which are driven through the lower corners of the shingles of course C also pass through elements 4: of the folds of the shingles of course B as well as the upper corners of the shingles of course A and the inner elements 4 of the folds of the shingles-of course B. This is true of every courseexcept the first or bottom course and provides simple and highly eflicient means whereby the shingles may be quickly and easily secured in position, in interlocking enga einent and with a minimum number of. nails, thus effecting a material saving in nails and time required to lay the shingles. As will be clear from Fig. 1, every shingle except those of the first course, is effectually secured at six points, and but very little lap is required to make a vmoisture-tight closure as the shingles are all effectually secured in tight cont-act and held against relative movement.

The lower portions 2 of the shingles of the bottom course A are cut off along the line of the double fold 4 to present a neat and finished appearance. covering or roof -made of shingles constructed and laid in the manner illustrated and described is very strong and durable, and presents a very neat and artistic effect. The double folds 4 produce a shadow line effect which is very desirable in shingle roofsand other shingled surfaces. by the upper portions of the shingles, which is also a very desirable feature of my invention as this prevents rusting of the nails,

and also prevents the shingles becoming rust,

out color schemes or designs in shingling and,

as above noted, the shape of the shingle can be varied to suit the design contemplated,

without in any way departing from the field and scope of my invention.

.The nails 5 are effectually covered What I claim is 1. A shingle provided with a central double fold roviding inner and outer elements exten ing in substantial parallehsm with the body' of the shingle and adapted for reception between them and the shingle body "of the corner portions of adjacent shingles, the ends of the shingle bein'ghplain and unfolded to facilitate insertion t ereof into the folds of adjacent shingles.

2. In combination, a plurality of shingles each provided with a central double fold, the upper corners of each shingle being inserted into the outer portions of the folds of the two superjacent shingles and the lower corners of each shingle being inserted into the inner folds of the two subj acent shingles, and means for securing the inner portions of the folds and the corner portions of the shingles inserted therein together and to a supporting structure upon which the shingles are laid.

In testimony whereof I afiix my signature.

- RAYMOND A. KNOLL. 

